PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-14:13:00
G01     125.0          13.4               11.3 +/-    2.27      29.2 +/-    2.27  0.080 / 0.310
G07     60.4           69.2                8.6 +/-    0.67       9.1 +/-    0.67  0.140 / 0.350
G08     48.6           37.4                7.3 +/-    0.70      11.0 +/-    0.70  0.030 / 0.030
G09     176.9          32.1                9.4 +/-    1.17      15.9 +/-    1.17  0.030 / 0.040
G11     115.1          36.7                9.7 +/-    0.90      14.9 +/-    0.90  0.090 / 0.180
G13     320.4          13.9                6.0 +/-    2.53      15.3 +/-    2.53  0.100 / 0.210
G17     200.5          17.0                8.1 +/-    1.44      19.1 +/-    1.44  0.140 / 0.280
G18     101.1          17.9                9.7 +/-    0.84      22.4 +/-    0.84  0.180 / 0.260
G28     280.4          54.2                7.5 +/-    3.10       9.0 +/-    3.10  0.040 / 0.030
G30     335.3          62.3                8.2 +/-    0.60       9.1 +/-    0.60  0.030 / 0.030